Bump wasm-bindgen dependency to 0.2.20

fitzgen · fitzgen · commit 79f37024b18e · 2018-09-06T15:05:44.000-07:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -13,4 +13,4 @@ travis-ci = { repository = "rustwasm/console_error_panic_hook" }
 
 [dependencies]
 cfg-if = "0.1.3"
-wasm-bindgen = "0.2.16"
+wasm-bindgen = "0.2.20"
